Should I use this page, or skip it?
If you have thirst, extra peeing, tiredness, blurred vision or recurring infections — or you are at higher risk and have not been tested — see a GP. Skip this page and call 999 or go to A&E if you have diabetes and are very thirsty, peeing a lot, sick, confused, drowsy or short of breath.
This is a decision guide for adults in the UK who have just been diagnosed, think they might have type 2 diabetes, or want a clearer map of NHS care. It is not a diet plan, and it is not the right page for type 1 diabetes, pregnancy diabetes, or an emergency high-sugar crisis.
How is type 2 diabetes different from type 1?
Type 2 means insulin is in short supply, or the body does not respond to it well, so glucose stays in the blood. Type 1 means little or no insulin is made, so insulin treatment is needed from diagnosis. Type 2 is more common in adults. Only blood tests and a clinician can tell the types apart.
You cannot diagnose yourself from a supermarket glucose gadget. Type 2 is confirmed with a blood test that looks at glucose, often including HbA1c (an average over recent weeks). Results usually take a few days. If you are unwell, do not wait for a routine result — that is a same-day problem.
Prediabetes (sometimes called non-diabetic hyperglycaemia) sits in the gap: glucose higher than usual, not high enough for diabetes, but a warning that type 2 is more likely unless something changes.
What symptoms should send me to a GP?
The classic cluster is tiredness, peeing more than usual (including at night), thirst, and weight loss you did not try for. Other clues include blurred vision, slow-healing cuts, and itching or thrush around the genitals. Symptoms can creep in so slowly that people blame age or a busy job.
Many people have no obvious symptoms and are picked up on a routine blood test or an NHS Health Check. That is why “I feel fine” is not a reason to skip a check if you are at higher risk.
See a GP if you think you or your child may have type 2 diabetes, or if you know you are at higher risk and have not been tested. Children with type 2 diabetes are looked after by specialists, not with a generic adult plan copied from the internet.
Who is more likely to get type 2 diabetes?
Risk is higher if you are white and over 40, or over 25 and South Asian, Chinese, Black African or Black Caribbean. A parent or sibling with type 2 diabetes, extra weight with little activity, and high blood pressure also raise the chance. You cannot change family or age; you can change some of the rest.
Diabetes UK’s Know Your Risk tool is a starting point, not a diagnosis. In England, the NHS Diabetes Prevention Programme is aimed at people with prediabetes or a high risk who want structured support.
If you already have high blood pressure or high cholesterol, treating those alongside glucose is part of the same long game: protecting blood vessels, not collecting separate “scores”.
Can type 2 diabetes go into remission?
Sometimes. The NHS says lifestyle changes can lower glucose, and for some people they bring it back into the usual range — often called remission. That is more likely with significant, supported weight loss. It is not a prize everyone can claim, and it is not the same as a cure: follow-up still matters.
Do not start a very strict low-calorie diet on your own if you take insulin or other diabetes medicine. Those diets can be unsafe without professional supervision. Ask your GP or diabetes nurse about local support, including NHS weight-management or digital programmes you may be eligible for.
A free structured education course should be offered within a year of diagnosis. Online options such as Healthy living for people with type 2 diabetes exist if a classroom course does not suit you. The course is not optional homework; it is how people learn to make day-to-day decisions without panic.
| Approach | What it is for | What it is not |
|---|---|---|
| Food, activity and weight support | First step for almost everyone; can be enough for some people, including those aiming for remission | A reason to refuse medicine if your team says you need it |
| Metformin plus an SGLT2 inhibitor | Usual first combination on the NHS if you need medicine and do not have another serious condition that changes the plan | A sign you have “failed” lifestyle changes |
| GLP-1 weekly injection | Sometimes offered if you have heart disease, or obesity when other treatments have not lowered glucose enough | A cosmetic weight-loss jab to source without a diabetes review |
| Insulin | Used when other medicines are not enough, or in other situations your team explains | Proof that type 2 has become type 1 |
What does NHS treatment usually look like?
If medicine is needed and you do not have another serious condition that changes the choice, you will often be offered metformin (which helps the body use insulin) plus an SGLT2 inhibitor (which lets extra glucose leave in the urine). If metformin disagrees with you, an SGLT2 inhibitor alone may be used.
If you have a history of heart disease, a GLP-1 agonist injection — usually weekly — may be added. The same class is sometimes offered if you also live with obesity and other treatments have not brought glucose down. Insulin, by injection or pump, is still used in type 2 when needed. Taking too much insulin can cause a hypo; your team will show you how to recognise and treat that.
If you are vomiting, have diarrhoea, or a very high temperature while on diabetes medicine, ask for an urgent GP appointment or call NHS 111. You may be told to pause a medicine temporarily. Do not stop everything on a hunch.
There is no need to hunt for a “best vitamin”. A balanced diet, activity (the NHS suggests at least 2.5 hours a week of walking or similar that leaves you a little out of breath), not smoking, and sensible alcohol are the levers that actually move risk.
Which appointments should I not skip?
HbA1c every 3 to 6 months shows whether the plan is working. At least yearly, expect weight or BMI, cholesterol, blood pressure and kidney checks. Eye screening is offered at diagnosis, then every 1 or 2 years. Feet are checked every 2 years if the last check was reassuring, or yearly if you need closer watching.
See a GP or diabetes nurse between reviews if you notice blisters or cracked skin on your feet, pain, tingling or numbness, new problems with sex, constipation or diarrhoea that could be nerve-related, or worsening vision. Gum disease is more likely with diabetes, so dental check-ups are part of the same picture.
If you get hypos, or you take insulin, you may need to tell the DVLA about your diabetes. GOV.UK has the current driving rules — do not guess from a forum post.
When is high or low blood sugar an emergency?
Call 999 or go to A&E if you have type 2 diabetes and you are peeing a lot, very thirsty, sick, confused, very sleepy, drowsy or short of breath. Those can be signs of hyperosmolar hyperglycaemic state (HHS) or diabetic ketoacidosis (DKA). Both can be life-threatening. Do not drive yourself.
HHS is uncommon in type 2 but can build over days, often with infection and dehydration. DKA is more typical of type 1 but can happen in type 2 when insulin is very low. Either way, waiting to “see if it settles overnight” is the wrong plan.
Hypos are different: shaking, sweating, hunger, odd behaviour. If someone is unconscious, do not force food or drink. Call 999 if they are not responding, if glucagon is not available or has not worked, or if they have been drinking alcohol.
Pregnancy needs a separate, planned path. If you have type 2 diabetes and want a baby, ask for referral before you conceive so medicines can be switched to ones that are safer in pregnancy.
When is this page NOT the right thing to read?
Skip this page if you think you have DKA or HHS, if you are unconscious or not responding because of a hypo, or if you have type 1 diabetes, diabetes in pregnancy, or a child’s diagnosis to manage. Those need emergency services or specialist pages, not this adult type 2 overview.
If you already have a named medicine plan, use the leaflet and our pages on metformin, insulin or HbA1c for the detail. If your main question is “do I have prediabetes?”, start there instead.
Common questions about type 2 diabetes
- What is the difference between type 1 and type 2 diabetes?
- In type 1 diabetes the body cannot make insulin at all, and it usually begins in childhood or early adulthood. In type 2 diabetes the body does not make enough insulin or cannot use it well; it is more common, usually develops later in life, and is strongly linked to weight, family history, ethnicity and other risk factors. Blood tests distinguish the two — do not self-label.
- What are the early signs of type 2 diabetes?
- Symptoms can be subtle and develop slowly. They include feeling thirsty, urinating more than usual, tiredness, blurred vision, recurring infections such as thrush, and cuts that heal slowly. Many people have no obvious symptoms at first, which is why checks matter if you are at higher risk.
- Can type 2 diabetes be reversed?
- For some people, weight loss and lifestyle changes can bring blood sugar back into the usual range. The NHS calls this remission. It is not possible for everyone, it needs follow-up, and you should not start a very strict low-calorie diet without speaking to your diabetes team if you take insulin or other diabetes medicine.
- What should I eat with type 2 diabetes?
- There is no single "diabetes diet". In general, plenty of vegetables, wholegrains, pulses, and less sugary and highly processed food helps. Your GP, nurse or a dietitian can tailor advice. Do not copy extreme online meal plans, especially if you take medicine that can cause low blood sugar.
- Will I need insulin?
- Not always. Many people start with metformin and an SGLT2 inhibitor tablet. Some people are offered a weekly GLP-1 injection if they have heart disease or obesity and other treatments are not enough. Insulin is used when tablets and other medicines do not keep glucose in range, or in some other situations your team will explain.
- How often do I need check-ups?
- The NHS usually checks average blood glucose (HbA1c) every 3 to 6 months, reviews weight, cholesterol, blood pressure and kidneys at least yearly, offers diabetic eye screening, and checks feet (yearly, or every 2 years if your last check was reassuring). Missing these visits is how complications sneak through.
- What is a hypo?
- A hypo is low blood sugar, usually below 4 mmol/L, and mainly affects people who take insulin or certain other diabetes medicines. Symptoms include shaking, sweating, hunger, irritability and confusion. Your diabetes team should show you how to treat it. Call 999 if someone with diabetes is unconscious or not responding.
- I have been told I have prediabetes — what now?
- Prediabetes means glucose is higher than usual but not in the diabetes range. You are at higher risk of type 2 diabetes. Eating more healthily, moving more and losing weight if you have been advised to can reduce that risk. Ask about the NHS Diabetes Prevention Programme if you live in England.